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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - CudaInstallationDetector initialized with wrong triple"
href="https://bugs.llvm.org/show_bug.cgi?id=45993">45993</a>
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<th>Summary</th>
<td>CudaInstallationDetector initialized with wrong triple
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>CUDA
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>paul_robinson@playstation.sony.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>The constructor for CudaInstallationDetector expects to be passed the
*host* triple as a parameter, but actually it is being given the *target*
triple by the Generic_GCC constructor. Toolchain classes are constructed
with the target triple, and Generic_GCC just passes this down to its
CudaInstallation member. This happens to work for a non-cross compiler
but does the wrong thing for a cross-compiler.
I'm not finding a handy API to retrieve the host triple, but I did find
the LLVM_HOST_TRIPLE define, in llvm-config.h. That's probably what
CudaInstallationDetector should use, instead of taking a triple as a
parameter.
(PS4 uses a Windows-hosted cross-compiler, which is why we found this.
But it's a potential bug for any cross-compiler. We've advised our
licensees to use `--cuda-path-ignore-env` as a workaround, to avoid an
excessive number of failed file searches on startup.)</pre>
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